Hi,I just checked it and it is identical to the Pixel 5 Launcher so the mod on post #2 should work as is. If it is not working then you probably have something else modding the launcher. My advice is to remove any launcher mods and flash the helper zip via Magisk. Once you boot up, install the apk and mod to your liking via Substratum lite. Do not use the standard Substratum, it will not work.
I don't understand I have install the magisk mod restart and the apk for substratum lite and when launc it "proceed" I have Always a message few privacy installed !? (Screenshots)